The use of low frequency pure sine wave inverter:
Power-on: The off grid solar inverter generally needs to be connected to the battery first, and then connected after power-on. It is not recommended to connect the load before power-on. And don't switch the machine frequently in a short time.For low frequency, it is important to ensure that the load is off-grid and cannot be integrated into the grid.
Use of load: Generally, it is recommended that the rated power of the load does not exceed 70% of the power of the machine, and the starting power should be taken into account when the power load is used. If the machine is no-load or light-loaded, it is good, and the voltage is reduced or turned off when a large electrical appliance is used, which is generally a manifestation of overload. If the machine restarts repeatedly or observes the flickering light of the machine's working light, most of it is a manifestation of overload.
Overvoltage and undervoltage protection of battery: When the battery voltage exceeds or is lower than the DC working range of the machine, the machine will have overvoltage and undervoltage protection. It should be noted here that the no-load and light-load voltages of the battery cannot fully reflect the full charge of the battery. Judging this is to see if there is a long beeping phenomenon. The long beeping is generally a state of undervoltage.
If the customer has a situation where the battery is reversed once, and the machine does not respond after the correct connection, it is necessary to remove the outer cover and replace the insurance.